91 lines
2.4 KiB
Go
91 lines
2.4 KiB
Go
// tutor
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package repositories
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import (
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"database/sql"
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"errors"
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"fmt"
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"log"
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"officeHours/models"
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)
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type TutorRepo struct {
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db *sql.DB
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}
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func NewTutorRepo(db *sql.DB) *TutorRepo {
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return &TutorRepo{
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db: db,
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}
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}
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func (r *TutorRepo) FindByEmail(email string) ([]models.Tutor, error) {
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rows, err := r.db.Query("SELECT * FROM tutor WHERE email=?", email)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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return r.getFromRows(rows)
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}
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func (r *TutorRepo) FindById(id int) (models.Tutor, error) {
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return r.getFromRow(r.db.QueryRow("SELECT * FROM tutor WHERE id=?", id))
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}
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func (r *TutorRepo) FindByNameAndEmail(name string, email string) (models.Tutor, error) {
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return r.getFromRow(r.db.QueryRow("SELECT * FROM tutor WHERE email=? AND name=?", email, name))
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}
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func (r *TutorRepo) GetAll() ([]models.Tutor, error) {
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rows, err := r.db.Query("SELECT * FROM tutor")
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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return r.getFromRows(rows)
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}
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func (r *TutorRepo) Add(tutor models.Tutor) (int, error) {
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//Don't add identical tutors
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existentTutor, err := r.FindByNameAndEmail(tutor.Name, tutor.Email)
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if errors.Is(err, sql.ErrNoRows) {
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sqlResult, err := r.db.Exec("INSERT INTO `tutor` (name, email, subscribeToMailinglist) VALUES (?,?,?)", tutor.Name, tutor.Email, tutor.SubscribeToMailinglist)
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if err != nil {
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err = fmt.Errorf("SQL-error inserting new tutor: %w", err)
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log.Println(err.Error())
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return 0, err
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}
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id, lastInsertIdErr := sqlResult.LastInsertId()
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if lastInsertIdErr != nil {
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log.Printf("Error getting Id for new tutor: %s", lastInsertIdErr.Error())
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}
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return int(id), err
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}
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return existentTutor.Id, err
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}
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func (r *TutorRepo) getFromRow(row *sql.Row) (models.Tutor, error) {
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var tutor models.Tutor
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if err := row.Scan(&tutor.Id, &tutor.Name, &tutor.Email, &tutor.SubscribeToMailinglist); err != nil {
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err = fmt.Errorf("SQL-error scanning tutor row: %w", err)
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log.Println(err.Error())
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return models.Tutor{}, err
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}
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return tutor, nil
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}
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func (r *TutorRepo) getFromRows(rows *sql.Rows) ([]models.Tutor, error) {
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var tutors []models.Tutor
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for rows.Next() {
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var tutor models.Tutor
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if err := rows.Scan(&tutor.Id, &tutor.Name, &tutor.Email, &tutor.SubscribeToMailinglist); err != nil {
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err = fmt.Errorf("Error scanning tutor row: %w", err)
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log.Println(err.Error())
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return tutors, err
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}
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tutors = append(tutors, tutor)
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}
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return tutors, nil
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}
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